Il numero 680, seicentottanta in Italiano, in Inglese si dice six hundred eighty.
Il numero ordinale 680° in inglese si dice six hundred eightieth.
671: six hundred seventy-one
672: six hundred seventy-two
673: six hundred seventy-three
674: six hundred seventy-four
675: six hundred seventy-five
676: six hundred seventy-six
677: six hundred seventy-seven
678: six hundred seventy-eight
679: six hundred seventy-nine
681: six hundred eighty-one
682: six hundred eighty-two
683: six hundred eighty-three
684: six hundred eighty-four
685: six hundred eighty-five
686: six hundred eighty-six
687: six hundred eighty-seven
688: six hundred eighty-eight
689: six hundred eighty-nine